Crabs(螃蟹) are very interesting creatures. If you put several of them in a bucket, the moment one of them starts crawling out, the other crabs will pull him back down. So none of the crabs ever    in getting out. They just keep stopping each other from climbing higher than the rest of them. We humans are   more like crabs than we think. We try to get even with our enemies, and ahead of our   . But we have to realize that "when we're green with envy(嫉妒 ) , we're also ripe for problems".
Whether we admit it or not, most of us want other people to be just a little less successful than we are. Friends are always   about your success, as long as you're not more successful than they are ! But one of the first secrets to success is not to compare your life with others. It's strange that many of us seem to know      to live everybody else's lives but our own. Even though what happens in someone else's life has     to do with ours.
Successful people look at life through a telescope and see how great it can be,    jealous people look at life through a microscope and only see the faults and mistakes of others. Being jealous of others is just a slow way of suicide (自杀) that will      both your health and happiness.
You have a special   and personality that no one else has. So use yours the best way possible. Stop comparing yourself with others. Birds don't     . Pigs don't climb trees. And crabs don't fly. Enjoy your own natural abilities and develop your own style.

A．succeeds B．arrives C．checks D．gives

A．hardly B．perhaps C．nearly D．still

A．classmates B．meighbours C．friends D．families

A．worried B．happy C．serious D．mad

A．where B．when C．what D．how

A．something B．anything C．nothing D．everything

A．and B．or C．so D．but

A．kill B．protect C．separate D．improve

A．ability B．mermory C．skill D．thought

A．sing B．fly C．swim D．sleep